From:	"Alexei K." <kzua AT kzua DOT udm DOT ru>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: SIGILL 386 (illegal opcode)
Date:	Wed, 14 May 2003 18:46:04 +0500
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"Martin Stromberg" <eplmst AT lu DOT erisoft DOT se> сообщил/сообщила в новостях следующее:
news:b9qi83$cgq$1 AT antares DOT lu DOT erisoft DOT se...
> Martin Stromberg (eplmst AT lu DOT erisoft DOT se) wrote:
> : If the problem is where Andris has indicated, you don't have to. You
> : just need to correct a header file.
>
> Today I think that won't work as the instruction is compiled into
> libstdxx.a. Sorry.

Thanks a lot. As I see it is not problem of DJGPP libstdcxx.
I found in libstdc++-v3 FAQ the following article:

"Threading is broken on i386

   Support for atomic integer operations is/was broken on i386 platforms.
   The assembly code accidentally used opcodes that are only available on
   the i486 and later. So if you configured GCC to target, for example,
   i386-linux, but actually used the programs on an i686, then you would
   encounter no problems. Only when actually running the code on a i386
   will the problem appear.

   This is fixed in 3.2.2."

But really it is not fixed. (may be in 3.2.3?)

I had replaced (as you recommend) atomicity.h for each IA-32 compatible CPU (just in case)
to /generic/atomicity.h. After that I had rebuilded libstdcxx. And now my programs are runing
fine on 386 CPU.

Alexei K.

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